As someone from the country were Aldi and Lidl come from, and disclaimer- I do shop there myself too- they have an atrocious profile compared to other more expensive supermarkets. They are cheap for a reason. They don’t pay farmers as well, obviously the meat comes from horrible conditions, they don’t pay staff as well/give less benefits, they are massive chains with the power to cut corners and pressure producers for lower…… not everything is bad and the taste and for some things quality is not worse than with others but those discounters are part of a bigger problem.
Lidl especially has a history of treating its employees extremely bad here (there was quite the scandal a couple of years ago).
So, I don’t think making a point in not shopping there is problematic. Just as I can shop there while being aware of the more problematic side (I mean I also buy fast fashion- even though my purchases last way longer than sustainable, ethical, expensive influencer investment pieces- even though I know it is perpetuating horrible working conditions and bad for the environment. And even though I probably could afford not to.). But I also don’t get my knickers in a twist if someone makes a point in avoiding them for whatever reason. Feeling better than shopping there is not that problematic compared to most of the other tit they do. It’s a bit entitled but yeah…..